Accession Number : AD0863397

Title :   Design of Numerically Controlled Dome Forming Machine.

Descriptive Note : Final rept. 1 Oct 68-Sep 69,

Corporate Author : PARSONS CORP TRAVERSE CITY MI

Personal Author(s) : Sporck, Claus L.

Report Date : OCT 1969

Pagination or Media Count : 165

Abstract : The report describes the work accomplished on a project to design the mechanical structure and numerical control system for a large capacity Dome Forming Machine, primarily for the production of large solid propellant motor hardware. The objective of this machine design is to provide a production unit capable of forming a two-inch thick disc shaped workpiece into ellipsoidal and hemispherical dome shapes, with a finish diameter from 85 to 160 inches. The approach to this objective is predicted on spinning and roller bending the workpiece. In the design of the numerical controlled machine, a control system was conceived that led to the selection of geometric curve fitting as the method to be used in generating the forming path. The computer program which employs an algorithm expression for the forming geometry, may be modified to correct for excessive forming forces without significant hardware modifications. (Author)

Descriptors :   *MECHANICAL WORKING), (*MACHINE TOOLS, CONTROL SYSTEMS, SOLID PROPELLANT ROCKET ENGINES, SPINNING(INDUSTRIAL PROCESSES), HEMISPHERICAL SHELLS, CURVE FITTING, SERVOMECHANISMS, BENDING.

Subject Categories : Mfg & Industrial Eng & Control of Product Sys
      Machinery and Tools

Distribution Statement : APPROVED FOR PUBLIC RELEASE